package com.service.iter.generic_service;

import com.pojo.User;
import com.util.Res;

/**
 * login服务
 *
 * @author admin
 * 2023/06/19
 */
public interface ILoginService {
    /**
     * 为空
     *
     * @param user 用户
     * @return {@link Res}
     */
    Res isNull(User user);
}
